STRAIN MEASUREMENTS ON A PRESSURIZED SOLID PROPELLANT GRAIN
CALIFORNIA INST OF TECHNOLOGY PASADENA JET PROPULSION LAB
Pagination or Media Count:
Measurements of the principal strains existing on the end cross section of five different solid propellant grains were made for two loading conditions, using the photoelastic coating technique. Surface re-enforcing effects were minimized by the application of a low-modulus 500 psi birefringent resin as the coating medium. The principal stresses in the coating were separated by a graphical procedure. The results indicate that the coating technique gives a more realistic measurement of grain stress concentrations and surface strain magnitudes, and that stress measurements obtained from classical model theory are quite conservative.
- Ammunition and Explosives
- Solid Rocket Propellants